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首页> 外文期刊>Polymers for advanced technologies >Antimicrobial silica particles loaded with quaternary ammonium polyethyleneimine network
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Antimicrobial silica particles loaded with quaternary ammonium polyethyleneimine network

机译：载有季铵聚乙烯亚胺网络的抗菌二氧化硅颗粒

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摘要

Silica particles functionalized with quaternary ammonium groups were prepared by interpenetrating polyethylenimine (PEI) into silica particles and crosslinking with diiodopentane, followed by octyliodide alkylation and methyliodide quaternarization (S-QA-PEI). The synthesized S-QA-PEI particles were identified with a slight particle size increase of 2-3 μm. Different ratios of PEI: silica particles were prepared and analyzed. While silica particles are negatively charged, -16.7 ± 5.11 mV, the prepared S-QA-PEI particles are positively charged, +50-60 mV. These particles were embedded in poly(ethylene vinyl acetate) and poly(ethylene methacrylic acid) coatings which exhibited strong antibacterial activity.
机译：通过将聚乙烯亚胺（PEI）互渗到二氧化硅颗粒中并与二碘戊烷交联，然后进行辛碘化烷基化和甲基碘化季铵化（S-QA-PEI），制备被季铵基官能化的二氧化硅颗粒。鉴定出合成的S-QA-PEI颗粒具有2-3μm的微小粒度增加。制备并分析了不同比例的PEI：二氧化硅颗粒。当二氧化硅颗粒带负电，为-16.7±5.11 mV时，制得的S-QA-PEI颗粒带正电，为+ 50-60 mV。这些颗粒包埋在表现出强抗菌活性的聚（乙烯乙酸乙烯酯）和聚（乙烯甲基丙烯酸）涂料中。

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